Raptor YFM 660 Aftermarket Valve Springs Spring Kit Complete Stronger Upgrade YFZ450 providing reduced engine vibration

providing reduced engine vibration

Q: Is this kit suitable for modified or big bore engines

and then centerless grind the entire body of the stud

Secure Fit: Each kit includes 12 point flange nuts and washers

Raptor YFM 660 Aftermarket Valve Springs Spring Kit Complete Stronger Upgrade YFZ450 providing reduced engine vibrationFITS ALL YAMAHA RHINO GRIZZLY 660 MODELS AND YEARS BUY IN BULK AND SAVE Aftermarket replacement for OEM valve springs Heat treated springs Hardened retainers Base washers Kibblewhite Viton valve stem seals As good as OEM for half the price Works on all models and years with stock or aftermarket camshafts